(function() {

    var debug = false;
   
    var root = this;
   
    var EXIF = function(obj) {
     if (obj instanceof EXIF) return obj;
     if (!(this instanceof EXIF)) return new EXIF(obj);
     this.EXIFwrapped = obj;
    };
   
    if (typeof exports !== 'undefined') {
     if (typeof module !== 'undefined' && module.exports) {
      exports = module.exports = EXIF;
     }
     exports.EXIF = EXIF;
    } else {
     root.EXIF = EXIF;
    }
   
    var ExifTags = EXIF.Tags = {
   
     // version tags
     0x9000 : "ExifVersion",    // EXIF version
     0xA000 : "FlashpixVersion",   // Flashpix format version
   
     // colorspace tags
     0xA001 : "ColorSpace",    // Color space information tag
   
     // image configuration
     0xA002 : "PixelXDimension",   // Valid width of meaningful image
     0xA003 : "PixelYDimension",   // Valid height of meaningful image
     0x9101 : "ComponentsConfiguration", // Information about channels
     0x9102 : "CompressedBitsPerPixel", // Compressed bits per pixel
   
     // user information
     0x927C : "MakerNote",    // Any desired information written by the manufacturer
     0x9286 : "UserComment",    // Comments by user
   
     // related file
     0xA004 : "RelatedSoundFile",  // Name of related sound file
   
     // date and time
     0x9003 : "DateTimeOriginal",  // Date and time when the original image was generated
     0x9004 : "DateTimeDigitized",  // Date and time when the image was stored digitally
     0x9290 : "SubsecTime",    // Fractions of seconds for DateTime
     0x9291 : "SubsecTimeOriginal",  // Fractions of seconds for DateTimeOriginal
     0x9292 : "SubsecTimeDigitized",  // Fractions of seconds for DateTimeDigitized
   
     // picture-taking conditions
     0x829A : "ExposureTime",   // Exposure time (in seconds)
     0x829D : "FNumber",     // F number
     0x8822 : "ExposureProgram",   // Exposure program
     0x8824 : "SpectralSensitivity",  // Spectral sensitivity
     0x8827 : "ISOSpeedRatings",   // ISO speed rating
     0x8828 : "OECF",     // Optoelectric conversion factor
     0x9201 : "ShutterSpeedValue",  // Shutter speed
     0x9202 : "ApertureValue",   // Lens aperture
     0x9203 : "BrightnessValue",   // Value of brightness
     0x9204 : "ExposureBias",   // Exposure bias
     0x9205 : "MaxApertureValue",  // Smallest F number of lens
     0x9206 : "SubjectDistance",   // Distance to subject in meters
     0x9207 : "MeteringMode",   // Metering mode
     0x9208 : "LightSource",    // Kind of light source
     0x9209 : "Flash",     // Flash status
     0x9214 : "SubjectArea",    // Location and area of main subject
     0x920A : "FocalLength",    // Focal length of the lens in mm
     0xA20B : "FlashEnergy",    // Strobe energy in BCPS
     0xA20C : "SpatialFrequencyResponse", //
     0xA20E : "FocalPlaneXResolution", // Number of pixels in width direction per FocalPlaneResolutionUnit
     0xA20F : "FocalPlaneYResolution", // Number of pixels in height direction per FocalPlaneResolutionUnit
     0xA210 : "FocalPlaneResolutionUnit", // Unit for measuring FocalPlaneXResolution and FocalPlaneYResolution
     0xA214 : "SubjectLocation",   // Location of subject in image
     0xA215 : "ExposureIndex",   // Exposure index selected on camera
     0xA217 : "SensingMethod",   // Image sensor type
     0xA300 : "FileSource",    // Image source (3 == DSC)
     0xA301 : "SceneType",    // Scene type (1 == directly photographed)
     0xA302 : "CFAPattern",    // Color filter array geometric pattern
     0xA401 : "CustomRendered",   // Special processing
     0xA402 : "ExposureMode",   // Exposure mode
     0xA403 : "WhiteBalance",   // 1 = auto white balance, 2 = manual
     0xA404 : "DigitalZoomRation",  // Digital zoom ratio
     0xA405 : "FocalLengthIn35mmFilm", // Equivalent foacl length assuming 35mm film camera (in mm)
     0xA406 : "SceneCaptureType",  // Type of scene
     0xA407 : "GainControl",    // Degree of overall image gain adjustment
     0xA408 : "Contrast",    // Direction of contrast processing applied by camera
     0xA409 : "Saturation",    // Direction of saturation processing applied by camera
     0xA40A : "Sharpness",    // Direction of sharpness processing applied by camera
     0xA40B : "DeviceSettingDescription", //
     0xA40C : "SubjectDistanceRange", // Distance to subject
   
     // other tags
     0xA005 : "InteroperabilityIFDPointer",
     0xA420 : "ImageUniqueID"   // Identifier assigned uniquely to each image
    };
   
    var TiffTags = EXIF.TiffTags = {
     0x0100 : "ImageWidth",
     0x0101 : "ImageHeight",
     0x8769 : "ExifIFDPointer",
     0x8825 : "GPSInfoIFDPointer",
     0xA005 : "InteroperabilityIFDPointer",
     0x0102 : "BitsPerSample",
     0x0103 : "Compression",
     0x0106 : "PhotometricInterpretation",
     0x0112 : "Orientation",
     0x0115 : "SamplesPerPixel",
     0x011C : "PlanarConfiguration",
     0x0212 : "YCbCrSubSampling",
     0x0213 : "YCbCrPositioning",
     0x011A : "XResolution",
     0x011B : "YResolution",
     0x0128 : "ResolutionUnit",
     0x0111 : "StripOffsets",
     0x0116 : "RowsPerStrip",
     0x0117 : "StripByteCounts",
     0x0201 : "JPEGInterchangeFormat",
     0x0202 : "JPEGInterchangeFormatLength",
     0x012D : "TransferFunction",
     0x013E : "WhitePoint",
     0x013F : "PrimaryChromaticities",
     0x0211 : "YCbCrCoefficients",
     0x0214 : "ReferenceBlackWhite",
     0x0132 : "DateTime",
     0x010E : "ImageDescription",
     0x010F : "Make",
     0x0110 : "Model",
     0x0131 : "Software",
     0x013B : "Artist",
     0x8298 : "Copyright"
    };
   
    var GPSTags = EXIF.GPSTags = {
     0x0000 : "GPSVersionID",
     0x0001 : "GPSLatitudeRef",
     0x0002 : "GPSLatitude",
     0x0003 : "GPSLongitudeRef",
     0x0004 : "GPSLongitude",
     0x0005 : "GPSAltitudeRef",
     0x0006 : "GPSAltitude",
     0x0007 : "GPSTimeStamp",
     0x0008 : "GPSSatellites",
     0x0009 : "GPSStatus",
     0x000A : "GPSMeasureMode",
     0x000B : "GPSDOP",
     0x000C : "GPSSpeedRef",
     0x000D : "GPSSpeed",
     0x000E : "GPSTrackRef",
     0x000F : "GPSTrack",
     0x0010 : "GPSImgDirectionRef",
     0x0011 : "GPSImgDirection",
     0x0012 : "GPSMapDatum",
     0x0013 : "GPSDestLatitudeRef",
     0x0014 : "GPSDestLatitude",
     0x0015 : "GPSDestLongitudeRef",
     0x0016 : "GPSDestLongitude",
     0x0017 : "GPSDestBearingRef",
     0x0018 : "GPSDestBearing",
     0x0019 : "GPSDestDistanceRef",
     0x001A : "GPSDestDistance",
     0x001B : "GPSProcessingMethod",
     0x001C : "GPSAreaInformation",
     0x001D : "GPSDateStamp",
     0x001E : "GPSDifferential"
    };
   
    var StringValues = EXIF.StringValues = {
     ExposureProgram : {
      0 : "Not defined",
      1 : "Manual",
      2 : "Normal program",
      3 : "Aperture priority",
      4 : "Shutter priority",
      5 : "Creative program",
      6 : "Action program",
      7 : "Portrait mode",
      8 : "Landscape mode"
     },
     MeteringMode : {
      0 : "Unknown",
      1 : "Average",
      2 : "CenterWeightedAverage",
      3 : "Spot",
      4 : "MultiSpot",
      5 : "Pattern",
      6 : "Partial",
      255 : "Other"
     },
     LightSource : {
      0 : "Unknown",
      1 : "Daylight",
      2 : "Fluorescent",
      3 : "Tungsten (incandescent light)",
      4 : "Flash",
      9 : "Fine weather",
      10 : "Cloudy weather",
      11 : "Shade",
      12 : "Daylight fluorescent (D 5700 - 7100K)",
      13 : "Day white fluorescent (N 4600 - 5400K)",
      14 : "Cool white fluorescent (W 3900 - 4500K)",
      15 : "White fluorescent (WW 3200 - 3700K)",
      17 : "Standard light A",
      18 : "Standard light B",
      19 : "Standard light C",
      20 : "D55",
      21 : "D65",
      22 : "D75",
      23 : "D50",
      24 : "ISO studio tungsten",
      255 : "Other"
     },
     Flash : {
      0x0000 : "Flash did not fire",
      0x0001 : "Flash fired",
      0x0005 : "Strobe return light not detected",
      0x0007 : "Strobe return light detected",
      0x0009 : "Flash fired, compulsory flash mode",
      0x000D : "Flash fired, compulsory flash mode, return light not detected",
      0x000F : "Flash fired, compulsory flash mode, return light detected",
      0x0010 : "Flash did not fire, compulsory flash mode",
      0x0018 : "Flash did not fire, auto mode",
      0x0019 : "Flash fired, auto mode",
      0x001D : "Flash fired, auto mode, return light not detected",
      0x001F : "Flash fired, auto mode, return light detected",
      0x0020 : "No flash function",
      0x0041 : "Flash fired, red-eye reduction mode",
      0x0045 : "Flash fired, red-eye reduction mode, return light not detected",
      0x0047 : "Flash fired, red-eye reduction mode, return light detected",
      0x0049 : "Flash fired, compulsory flash mode, red-eye reduction mode",
      0x004D : "Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected",
      0x004F : "Flash fired, compulsory flash mode, red-eye reduction mode, return light detected",
      0x0059 : "Flash fired, auto mode, red-eye reduction mode",
      0x005D : "Flash fired, auto mode, return light not detected, red-eye reduction mode",
      0x005F : "Flash fired, auto mode, return light detected, red-eye reduction mode"
     },
     SensingMethod : {
      1 : "Not defined",
      2 : "One-chip color area sensor",
      3 : "Two-chip color area sensor",
      4 : "Three-chip color area sensor",
      5 : "Color sequential area sensor",
      7 : "Trilinear sensor",
      8 : "Color sequential linear sensor"
     },
     SceneCaptureType : {
      0 : "Standard",
      1 : "Landscape",
      2 : "Portrait",
      3 : "Night scene"
     },
     SceneType : {
      1 : "Directly photographed"
     },
     CustomRendered : {
      0 : "Normal process",
      1 : "Custom process"
     },
     WhiteBalance : {
      0 : "Auto white balance",
      1 : "Manual white balance"
     },
     GainControl : {
      0 : "None",
      1 : "Low gain up",
      2 : "High gain up",
      3 : "Low gain down",
      4 : "High gain down"
     },
     Contrast : {
      0 : "Normal",
      1 : "Soft",
      2 : "Hard"
     },
     Saturation : {
      0 : "Normal",
      1 : "Low saturation",
      2 : "High saturation"
     },
     Sharpness : {
      0 : "Normal",
      1 : "Soft",
      2 : "Hard"
     },
     SubjectDistanceRange : {
      0 : "Unknown",
      1 : "Macro",
      2 : "Close view",
      3 : "Distant view"
     },
     FileSource : {
      3 : "DSC"
     },
   
     Components : {
      0 : "",
      1 : "Y",
      2 : "Cb",
      3 : "Cr",
      4 : "R",
      5 : "G",
      6 : "B"
     }
    };
   
    function addEvent(element, event, handler) {
     if (element.addEventListener) {
      element.addEventListener(event, handler, false);
     } else if (element.attachEvent) {
      element.attachEvent("on" + event, handler);
     }
    }
   
    function imageHasData(img) {
     return !!(img.exifdata);
    }
   
   
    function base64ToArrayBuffer(base64, contentType) {
     contentType = contentType || base64.match(/^data\:([^\;]+)\;base64,/mi)[1] || ''; // e.g. 'data:image/jpeg;base64,...' => 'image/jpeg'
     base64 = base64.replace(/^data\:([^\;]+)\;base64,/gmi, '');
     var binary = atob(base64);
     var len = binary.length;
     var buffer = new ArrayBuffer(len);
     var view = new Uint8Array(buffer);
     for (var i = 0; i < len; i++) {
      view[i] = binary.charCodeAt(i);
     }
     return buffer;
    }
   
    function objectURLToBlob(url, callback) {
     var http = new XMLHttpRequest();
     http.open("GET", url, true);
     http.responseType = "blob";
     http.onload = function(e) {
      if (this.status == 200 || this.status === 0) {
       callback(this.response);
      }
     };
     http.send();
    }
   
    function getImageData(img, callback) {
     function handleBinaryFile(binFile) {
      var data = findEXIFinJPEG(binFile);
      var iptcdata = findIPTCinJPEG(binFile);
      img.exifdata = data || {};
      img.iptcdata = iptcdata || {};
      if (callback) {
       callback.call(img);
      }
     }
   
     if (img.src) {
      if (/^data\:/i.test(img.src)) { // Data URI
       var arrayBuffer = base64ToArrayBuffer(img.src);
       handleBinaryFile(arrayBuffer);
   
      } else if (/^blob\:/i.test(img.src)) { // Object URL
       var fileReader = new FileReader();
       fileReader.onload = function(e) {
        handleBinaryFile(e.target.result);
       };
       objectURLToBlob(img.src, function (blob) {
        fileReader.readAsArrayBuffer(blob);
       });
      } else {
       var http = new XMLHttpRequest();
       http.onload = function() {
        if (this.status == 200 || this.status === 0) {
         handleBinaryFile(http.response);
        } else {
         throw "Could not load image";
        }
        http = null;
       };
       http.open("GET", img.src, true);
       http.responseType = "arraybuffer";
       http.send(null);
      }
     } else if (window.FileReader && (img instanceof window.Blob || img instanceof window.File)) {
      var fileReader = new FileReader();
      fileReader.onload = function(e) {
       if (debug) console.log("Got file of length " + e.target.result.byteLength);
       handleBinaryFile(e.target.result);
      };
   
      fileReader.readAsArrayBuffer(img);
     }
    }
   
    function findEXIFinJPEG(file) {
     var dataView = new DataView(file);
   
     if (debug) console.log("Got file of length " + file.byteLength);
     if ((dataView.getUint8(0) != 0xFF) || (dataView.getUint8(1) != 0xD8)) {
      if (debug) console.log("Not a valid JPEG");
      return false; // not a valid jpeg
     }
   
     var offset = 2,
      length = file.byteLength,
      marker;
   
     while (offset < length) {
      if (dataView.getUint8(offset) != 0xFF) {
       if (debug) console.log("Not a valid marker at offset " + offset + ", found: " + dataView.getUint8(offset));
       return false; // not a valid marker, something is wrong
      }
   
      marker = dataView.getUint8(offset + 1);
      if (debug) console.log(marker);
   
      // we could implement handling for other markers here,
      // but we're only looking for 0xFFE1 for EXIF data
   
      if (marker == 225) {
       if (debug) console.log("Found 0xFFE1 marker");
   
       return readEXIFData(dataView, offset + 4, dataView.getUint16(offset + 2) - 2);
   
       // offset += 2 + file.getShortAt(offset+2, true);
   
      } else {
       offset += 2 + dataView.getUint16(offset+2);
      }
   
     }
   
    }
   
    function findIPTCinJPEG(file) {
     var dataView = new DataView(file);
   
     if (debug) console.log("Got file of length " + file.byteLength);
     if ((dataView.getUint8(0) != 0xFF) || (dataView.getUint8(1) != 0xD8)) {
      if (debug) console.log("Not a valid JPEG");
      return false; // not a valid jpeg
     }
   
     var offset = 2,
      length = file.byteLength;
   
   
     var isFieldSegmentStart = function(dataView, offset){
      return (
       dataView.getUint8(offset) === 0x38 &&
       dataView.getUint8(offset+1) === 0x42 &&
       dataView.getUint8(offset+2) === 0x49 &&
       dataView.getUint8(offset+3) === 0x4D &&
       dataView.getUint8(offset+4) === 0x04 &&
       dataView.getUint8(offset+5) === 0x04
      );
     };
   
     while (offset < length) {
   
      if ( isFieldSegmentStart(dataView, offset )){
   
       // Get the length of the name header (which is padded to an even number of bytes)
       var nameHeaderLength = dataView.getUint8(offset+7);
       if(nameHeaderLength % 2 !== 0) nameHeaderLength += 1;
       // Check for pre photoshop 6 format
       if(nameHeaderLength === 0) {
        // Always 4
        nameHeaderLength = 4;
       }
   
       var startOffset = offset + 8 + nameHeaderLength;
       var sectionLength = dataView.getUint16(offset + 6 + nameHeaderLength);
   
       return readIPTCData(file, startOffset, sectionLength);
   
       break;
   
      }
   
   
      // Not the marker, continue searching
      offset++;
   
     }
   
    }
    var IptcFieldMap = {
     0x78 : 'caption',
     0x6E : 'credit',
     0x19 : 'keywords',
     0x37 : 'dateCreated',
     0x50 : 'byline',
     0x55 : 'bylineTitle',
     0x7A : 'captionWriter',
     0x69 : 'headline',
     0x74 : 'copyright',
     0x0F : 'category'
    };
    function readIPTCData(file, startOffset, sectionLength){
     var dataView = new DataView(file);
     var data = {};
     var fieldValue, fieldName, dataSize, segmentType, segmentSize;
     var segmentStartPos = startOffset;
     while(segmentStartPos < startOffset+sectionLength) {
      if(dataView.getUint8(segmentStartPos) === 0x1C && dataView.getUint8(segmentStartPos+1) === 0x02){
       segmentType = dataView.getUint8(segmentStartPos+2);
       if(segmentType in IptcFieldMap) {
        dataSize = dataView.getInt16(segmentStartPos+3);
        segmentSize = dataSize + 5;
        fieldName = IptcFieldMap[segmentType];
        fieldValue = getStringFromDB(dataView, segmentStartPos+5, dataSize);
        // Check if we already stored a value with this name
        if(data.hasOwnProperty(fieldName)) {
         // Value already stored with this name, create multivalue field
         if(data[fieldName] instanceof Array) {
          data[fieldName].push(fieldValue);
         }
         else {
          data[fieldName] = [data[fieldName], fieldValue];
         }
        }
        else {
         data[fieldName] = fieldValue;
        }
       }
   
      }
      segmentStartPos++;
     }
     return data;
    }
   
   
   
    function readTags(file, tiffStart, dirStart, strings, bigEnd) {
     var entries = file.getUint16(dirStart, !bigEnd),
      tags = {},
      entryOffset, tag,
      i;
   
     for (i=0;i<entries;i++) {
      entryOffset = dirStart + i*12 + 2;
      tag = strings[file.getUint16(entryOffset, !bigEnd)];
      if (!tag && debug) console.log("Unknown tag: " + file.getUint16(entryOffset, !bigEnd));
      tags[tag] = readTagValue(file, entryOffset, tiffStart, dirStart, bigEnd);
     }
     return tags;
    }
   
   
    function readTagValue(file, entryOffset, tiffStart, dirStart, bigEnd) {
     var type = file.getUint16(entryOffset+2, !bigEnd),
      numValues = file.getUint32(entryOffset+4, !bigEnd),
      valueOffset = file.getUint32(entryOffset+8, !bigEnd) + tiffStart,
      offset,
      vals, val, n,
      numerator, denominator;
   
     switch (type) {
      case 1: // byte, 8-bit unsigned int
      case 7: // undefined, 8-bit byte, value depending on field
       if (numValues == 1) {
        return file.getUint8(entryOffset + 8, !bigEnd);
       } else {
        offset = numValues > 4 ? valueOffset : (entryOffset + 8);
        vals = [];
        for (n=0;n<numValues;n++) {
         vals[n] = file.getUint8(offset + n);
        }
        return vals;
       }
   
      case 2: // ascii, 8-bit byte
       offset = numValues > 4 ? valueOffset : (entryOffset + 8);
       return getStringFromDB(file, offset, numValues-1);
   
      case 3: // short, 16 bit int
       if (numValues == 1) {
        return file.getUint16(entryOffset + 8, !bigEnd);
       } else {
        offset = numValues > 2 ? valueOffset : (entryOffset + 8);
        vals = [];
        for (n=0;n<numValues;n++) {
         vals[n] = file.getUint16(offset + 2*n, !bigEnd);
        }
        return vals;
       }
   
      case 4: // long, 32 bit int
       if (numValues == 1) {
        return file.getUint32(entryOffset + 8, !bigEnd);
       } else {
        vals = [];
        for (n=0;n<numValues;n++) {
         vals[n] = file.getUint32(valueOffset + 4*n, !bigEnd);
        }
        return vals;
       }
   
      case 5: // rational = two long values, first is numerator, second is denominator
       if (numValues == 1) {
        numerator = file.getUint32(valueOffset, !bigEnd);
        denominator = file.getUint32(valueOffset+4, !bigEnd);
        val = new Number(numerator / denominator);
        val.numerator = numerator;
        val.denominator = denominator;
        return val;
       } else {
        vals = [];
        for (n=0;n<numValues;n++) {
         numerator = file.getUint32(valueOffset + 8*n, !bigEnd);
         denominator = file.getUint32(valueOffset+4 + 8*n, !bigEnd);
         vals[n] = new Number(numerator / denominator);
         vals[n].numerator = numerator;
         vals[n].denominator = denominator;
        }
        return vals;
       }
   
      case 9: // slong, 32 bit signed int
       if (numValues == 1) {
        return file.getInt32(entryOffset + 8, !bigEnd);
       } else {
        vals = [];
        for (n=0;n<numValues;n++) {
         vals[n] = file.getInt32(valueOffset + 4*n, !bigEnd);
        }
        return vals;
       }
   
      case 10: // signed rational, two slongs, first is numerator, second is denominator
       if (numValues == 1) {
        return file.getInt32(valueOffset, !bigEnd) / file.getInt32(valueOffset+4, !bigEnd);
       } else {
        vals = [];
        for (n=0;n<numValues;n++) {
         vals[n] = file.getInt32(valueOffset + 8*n, !bigEnd) / file.getInt32(valueOffset+4 + 8*n, !bigEnd);
        }
        return vals;
       }
     }
    }
   
    function getStringFromDB(buffer, start, length) {
     var outstr = "";
     for (n = start; n < start+length; n++) {
      outstr += String.fromCharCode(buffer.getUint8(n));
     }
     return outstr;
    }
   
    function readEXIFData(file, start) {
     if (getStringFromDB(file, start, 4) != "Exif") {
      if (debug) console.log("Not valid EXIF data! " + getStringFromDB(file, start, 4));
      return false;
     }
   
     var bigEnd,
      tags, tag,
      exifData, gpsData,
      tiffOffset = start + 6;
   
     // test for TIFF validity and endianness
     if (file.getUint16(tiffOffset) == 0x4949) {
      bigEnd = false;
     } else if (file.getUint16(tiffOffset) == 0x4D4D) {
      bigEnd = true;
     } else {
      if (debug) console.log("Not valid TIFF data! (no 0x4949 or 0x4D4D)");
      return false;
     }
   
     if (file.getUint16(tiffOffset+2, !bigEnd) != 0x002A) {
      if (debug) console.log("Not valid TIFF data! (no 0x002A)");
      return false;
     }
   
     var firstIFDOffset = file.getUint32(tiffOffset+4, !bigEnd);
   
     if (firstIFDOffset < 0x00000008) {
      if (debug) console.log("Not valid TIFF data! (First offset less than 8)", file.getUint32(tiffOffset+4, !bigEnd));
      return false;
     }
   
     tags = readTags(file, tiffOffset, tiffOffset + firstIFDOffset, TiffTags, bigEnd);
   
     if (tags.ExifIFDPointer) {
      exifData = readTags(file, tiffOffset, tiffOffset + tags.ExifIFDPointer, ExifTags, bigEnd);
      for (tag in exifData) {
       switch (tag) {
        case "LightSource" :
        case "Flash" :
        case "MeteringMode" :
        case "ExposureProgram" :
        case "SensingMethod" :
        case "SceneCaptureType" :
        case "SceneType" :
        case "CustomRendered" :
        case "WhiteBalance" :
        case "GainControl" :
        case "Contrast" :
        case "Saturation" :
        case "Sharpness" :
        case "SubjectDistanceRange" :
        case "FileSource" :
         exifData[tag] = StringValues[tag][exifData[tag]];
         break;
   
        case "ExifVersion" :
        case "FlashpixVersion" :
         exifData[tag] = String.fromCharCode(exifData[tag][0], exifData[tag][1], exifData[tag][2], exifData[tag][3]);
         break;
   
        case "ComponentsConfiguration" :
         exifData[tag] =
          StringValues.Components[exifData[tag][0]] +
          StringValues.Components[exifData[tag][1]] +
          StringValues.Components[exifData[tag][2]] +
          StringValues.Components[exifData[tag][3]];
         break;
       }
       tags[tag] = exifData[tag];
      }
     }
   
     if (tags.GPSInfoIFDPointer) {
      gpsData = readTags(file, tiffOffset, tiffOffset + tags.GPSInfoIFDPointer, GPSTags, bigEnd);
      for (tag in gpsData) {
       switch (tag) {
        case "GPSVersionID" :
         gpsData[tag] = gpsData[tag][0] +
          "." + gpsData[tag][1] +
          "." + gpsData[tag][2] +
          "." + gpsData[tag][3];
         break;
       }
       tags[tag] = gpsData[tag];
      }
     }
   
     return tags;
    }
   
    EXIF.getData = function(img, callback) {
     if ((img instanceof Image || img instanceof HTMLImageElement) && !img.complete) return false;
   
     if (!imageHasData(img)) {
      getImageData(img, callback);
     } else {
      if (callback) {
       callback.call(img);
      }
     }
     return true;
    }
   
    EXIF.getTag = function(img, tag) {
     if (!imageHasData(img)) return;
     return img.exifdata[tag];
    }
   
    EXIF.getAllTags = function(img) {
     if (!imageHasData(img)) return {};
     var a,
      data = img.exifdata,
      tags = {};
     for (a in data) {
      if (data.hasOwnProperty(a)) {
       tags[a] = data[a];
      }
     }
     return tags;
    }
   
    EXIF.pretty = function(img) {
     if (!imageHasData(img)) return "";
     var a,
      data = img.exifdata,
      strPretty = "";
     for (a in data) {
      if (data.hasOwnProperty(a)) {
       if (typeof data[a] == "object") {
        if (data[a] instanceof Number) {
         strPretty += a + " : " + data[a] + " [" + data[a].numerator + "/" + data[a].denominator + "]\r\n";
        } else {
         strPretty += a + " : [" + data[a].length + " values]\r\n";
        }
       } else {
        strPretty += a + " : " + data[a] + "\r\n";
       }
      }
     }
     return strPretty;
    }
   
    EXIF.readFromBinaryFile = function(file) {
     return findEXIFinJPEG(file);
    }
   
    if (typeof define === 'function' && define.amd) {
     define('exif-js', [], function() {
      return EXIF;
     });
    }
   }.call(this));
   